Answer:
270
Step-by-step explanation:
[tex](-\frac{\sqrt{2} }{2} )(-18\sqrt{2} )18 - 18 - 36[/tex]
[tex]\sqrt{2}[/tex] × [tex]9\sqrt{2}[/tex] × 18 - 18 - 36
2 × 9 × 18 - 18 - 36
324 - 18 - 36 = 270
